Improvement in explosive engines



J. M. WELBUURNp Explosive Engines.

N 0. 142,880. Patented Septem be r 16,1873

Witnesses: Inventor:-

%! 0 PB I v JOSIAH M. WELBOURN,

' UITED STATES? PATENT OFFICE.

or CALEDONIA, OHIO.

IMPROVEMENT IN EXPLQSWE ENGINES.

Specification forming part of Letters PatentNo. 142,880, dated September 16. 1873; application filed August 9, 1673'. I

To all whom it may concern:

Be it known that I, J os'mn M. WELnoonN,

of Caledonia, in the county of Marion and" State of Ohio, have invented a new and Imbroved Explosive Engine, of which the follow- Eng is a specification: I

In the accompanying drawing, Figure 1 represents a top view of my explosive engine; and Fig. 2,2. vertical longitudinal section of the same on the line at a, Fig. 1.

Similar letters of reference indicate corresponding parts.

The object-0f my invention is to construct an engine which is driven by the explosive force of powder charges. My invention consists in the introduction and explosion of powder charges into chambers, which are alternately discharged to act on pistons, which turn the driving-wheels, and are regulated by suitable mechanism.

In the drawing, A represents the base-frame or other structure, on which the engine is placed, of oblong shape and suitable material.

Two powder-chambers, B,- together with the guide-frames C and rcgulatin g mechanisms D, are arranged parallel to each other in longitudinal direction at both sides of base A. They driving-wheels 'E are arranged on shaft F at the end of frame A, and produce, by alternately completing one-half of a revolution on each wheel, rotary motion of shaft F from the reciprocating motion of the pistons G. Each powder-chamber B is closed by an adjustable breech-piece, a, which may he detached for cleaning out the chamber. The closely-fittin g piston G moves in chamber B, its piston-rod b connecting, by a cross -pin, b, with strong spiral spring d, which is also applied, by crosshead 6, to pitman f, whose end iseccentricall y pivoted to the side of wheel E. The cross-pin b and cross-head a slide in horizontal slots g of-guide-frame (3, which. forms the extension 3f the casing B of the powder-chamber B.

The required quantity of powder is introduced, in cartridge form, into chamber 13' by means of a vertical casing, H, which is arranged on guiderailsh, placedon the top of chamber 13. A brush, i, of easing H serves to secure the cartridge in recess l of sliding piece L,'whicn reconnected by rod m to the pitman f, and canriedforward and backward in guide rails h. On the forward motion of slide L the cartridge drops, by aperture l'of the'casin g B, into chamber B, to be carried back toward breech-piece a by the returning piston G, and

he dischargedby th'e concussionagainstbreechblock a. The piston G is, by the explosion,

forced forward again, and causesilby its action I) lock on each forward stroke of pistons G. I

A double bent rod, N, which is secured by staples to the top ot'fi'ame D, presses with its down ward-extendin g arm on the end of sprin g- 1 rod M, when its upward-projecting arm is carried forward byrod q. Rod q slides in a ring or loop, g, at upper end of rod N, and act-s with its hook-shaped rear end on ring q when its fore end, which is pivoted to pitman f, arrives at the foremost position of the latter. The cross-pin b, with spring d, is instantly released by the pressure of arm N on springrod M, carrying thereby piston G and the charge back for a new explosion. A spring, -r, is coiled around rod N, and forces the downward arm toward a pin, 0'', till its action is overcome by rod q;

The alternating charging and exploding of both parts of the engine, regulated'iu connection with the pitman-rods, secure a uniform motion of the en inc, with variable speed, ac-

cording to the rapidity with which the charges are introduced.

Having thus described my invention, I

claim as new and desire to secure ,by Letters Patent 1. The combination of frame A, powderchambers B, guide-frame C, pistons G, wheels E with the charging mechanisms H L and regulati'ng mechanisms D, substantially as and for the purpose described. y

2 The charging mechanism consisting of easing H with brush 1",slid0 L having reccflfl 1, and chamber B.with'aperture' l; operated by rod m, pitman f, and piston G; as set forth. v

3. The regulating mechanism 1), produced by spring'rod M, having groove 12 for crossheali b, pivoted double i'od N, with rod g, and spring 1*, fer arresting and releasing piston G, for the purpose described.

4. The-hide-frame 0, having pin r, m retainin g double rod N till ready M, as described.

JOSIAH M 'Wit nesses:

- WILLIAM Gmvm,

JOHN S. IREY.

. ELBO RN.

to strike nod 

